Paper-reel brake.



i `Original application lfiled. LDecember 17,

'llllhlf anna ALBERT DU IBR'UL DECEASED, LATE OF FORT THOIEAS, KENTUCKY,BY FRANCES GOSELIN DU BRUL, EXEGUTRIX, OF FORT THOMAS, KENTUCKY,ASSIGNOR TO THE MILLER, DU BRUL 85 PETERS MFG. C0., OF CINCINNATI,OI-IIO, A CORPORA-k TION 0F OHIO.

PAPER-REEL BRAKE.

To all whom t may concern:

Be it `knownthatfinnland? DU BRUL, deceased, late a citizen of theUnited States, and resident of Fort Thomas, in the county of CampbellandState of Kentucky, did invent certain nen7` and. useful Improvementsin Paper-Reel Brakes, of which the follow- .ing is a specification.

This. applicationis a division of an application led December 17th,1913, Serial No. 807,256, lfor Letters Patent for improvements incigarette machines, in which the subject'matter of the presentapplication Was embodied by Way of illustrating one use for which itmightbe advantageously employed.

The invention relates to a device to be applied toa reelof paper orother material that is to be fed continuously to a machine that consumesthe material in the production of goods or articles, and the inventionhas for its object to provide a simple and effective means that willabsorb the excessive tensile stresses due to sudden starting of themachine or sudden changes in its speed, and Which Will also develop andautomatically maintain a delicately measured braking effect upon thereel, so long as the reel is running and notwithstanding reduction inthe diameter of the reel due to the consumption of the material.

y When a machine uses paper from a reel at a rate of speed whichnecessitates a rapid paying-out of the ypaper strip or Web, andparticularly when the paper is comparatively thin, starting of themachine tends to snap the paper, and this tendency is aggravated if thereel over-runs or races' at the previous stopping, in a manner to payout considerable slack paper, lthe reason for this being that themachine accelerates quickly While the slack is bein-g taken up, and theentire inertia of the stationary reel must be overcome by tensionexerted through the paper in getting the reel started. If a frictionbrake be applied to the surface of the reel it increases the resistanceofthe i reel to starting andaggravates the trouble. If the brakeresistance is reducedto decrease the danger of breakingthe paper, thenthere is' some slight over-running of the reel with consequent slackthat augments the danger ci? breaking, and even if 'the brakingpressarei Specification of Letters Patent.

Patented Oct.. 16, i917.

1913, Serial No.v807,256. Divided and this application iled August 22,1916. Serial No. 116,354.

`by providing the paper-reel brake embodying two main characteristics,namely, accurate adjustability to precisely the resistance desired. andautomatic regulation of resistance, With variation in the diameter' ofthe reel. But While with these characteristics the advantages-of theinvention may be realized to a highly important degree, a furthercharacteristic is preferably embodied in order that the advantages maybe realized' tothe fullest measure, which consists in an automatic slacktake-up that imposes tension upon the paper attimes s, of starting inthe taking up of the slack, and starts the paper reel gradually andWithout danger of breaking the paper. Y

For purposes of illustration, an embodiment ofthe invention in formsuitable for controlling the paper feed of a continuous cigarettemachine, is shown and described in the present application, but ity isto be understood that the invention is not limited yto this particularuse, but is applicable to paper fed from reels in lother types ofindustrial machinery, such for instance as feeding a thin stripl or webof paper to be twisted Figure l is a side elevation of a paper reel,suitably mounted for paying out toa paper-consuming machine, and havingthe preferred embodiment of the invention. associated therewith; and

n Fig. 2 is a top plan View of a braking device detached.

l represents a papervreel of standard type, rotatably secured by someconvenient means, such as Wingnut 2, upon a spindle 3 carried'by asuitable support L roo In machines which draw paper from such a reel ata comparatively rapid rate, as for instance in high speed continuouscigarette machines, and particularly Where the pull of the machine luponthe paper is rendered somewhat irregular by variations in the resistanceto the manufactured article passing through the machine, a reel Willfeed quite irregularly, first speeding up and then hanging back, so,that excessive tension is imposed at intervals upon the paper, vvhich'paper is being fed, even though. the pull upon the paper maybeirregular. Different papers lvary greatly in the co-efrlcientoffrictionthat will be developed by the brake shoe 7 with a givenpressure imposed throughthe medium of the lever 5, and this variation infriction may be diEerent in the samepaper under different atmosphericconditions. In order to be able to adjust With exactness the frictionalresistance imposed through the shoe 7, lever 5 is provided with a Weight8 that is adjustable thereon in a manner to increase or decreaseat.vvill, the pressure imposed through the lever. This Weight isconveniently rendered adjustable by means of a clamping strap 9surrounding the hub or fulcrum-bearing 10 of the lever 5, so thatit maybe fixed at any desired angle relatively to the lever.A Being offsetfrom its center of adjustment, Which is the fulcrum 6 by means of itsarm 11, such adjustment may be graduatedvvith exactness. Y

A further advantage of the described form of adjustment for the Weight 8is that it automatically graduates pressure exerted through the lever 5as thek reel l grows smaller With the unvvinding of paper therefrom.That isv to say, as the lever 5 descends and the Weight 8 vvith its arml1 rises from the position shovvn in Fig. 1, the horizontal distance orleverage through Which the Weight acts upon the lever 5 VWill increase,and its counterbalancingeli'ect upon the lever, 5 Will correspondinglyincrease, so that as the diameter of the reel grows less'and theinherent resistance to rotation being overcomeV through a constantlysmaller radius ofthe reel, the braking. resistance is correspondinglyrelieved and the tension on the paper approaches constancy. y j j Thearm 11 may be adjusted to a position toward the left hand of F ig. 1ybeyond the perpendicular, whereupon it will add to the braking pressureof the lever 5, and this may be necessary When the surface of the paper'to be n controlled Yis exceptionally smooth. But this does not changethe principle Vof operation, for it yismobvious that When in a positionto add its Weight to that of the lever 5, descent of the lever 5 Willtend to throvT the counter-Weight 8 farther away from the horizontal andtoward the perpendicular, so that the braking effect Will be graduallyreduced as the diameter of the reel reduces, just as in the instancefirst described.

AIn controlling the paper supplied to cigarette-machines and othermachines employing comparatively thin paper, it will often be desirableto regulate the pressure of the shoe 7 s0 that there Will be a slightslacki ing of the 'paper when the machine is stopped. In order to takeup this slack .and transmit gradually to the reel, the pull incidentl tostarting the machine again, an

auxiliary ,brakelever V12 is pivoted at 13 to the lever 5 and yprovidedWith a brake shoe 14 through which it rests Vpreferably by gravityalone, upon the portion'of the paper web or strip extending avvayfromthe reel toward the consuming machine. This auxiliary lever takes up anyslack in the web, as suggested by the dotted line position invvhich itis shown in Fig. 1, so that as soon as the pull is exerted of sufficientforce to straighten the paper, lifting the Weight of the auxiliary leverl2 will impose suiiicient resistance to start'revolution of the reelgradually.

What is claimed is f l. In a material unvvinding machine, a

braking lever fulcrumed to act by gravity on the periphery of a reel ofpaper, and anV vauxiliary tensionv means mounted on said braking leverand yfree to act by gravity to materially defiect the vveb of paperafter it leaves said reel, but yielding to permit straightening of theweb, under tension on the Web.

2. In a material unvvinding machine, a

braking lever adapted to act on the periphery of a reel of paper, and anauxiliary tension means mounted on said braking lever and extendingbeyond the same to act by gravityv on the web of paper after it leavessaid reel, deflecting said web of paper but yielding to permit it tostraighten under abnormal tension, and an adjustable weight controllingthe braking. action of said braking lever against the reel of paper. A

3. In a'vmaterial unwinding machine, a paper tensioning devicecomprising a fulcrumed brake lever, an adjustable balance Weightattached to said lever, and an auxiliary tension bar pivotally mountedon the braking end of said lever, and extending beyond the same inposition to deiect the paper extending fromthe reel.

4. A combined constant braking and takeup device for material fed fromreels, 'comprising an auxiliary brake lever yieldingly bearing againstthe material and adapted to take up slack therein at a point beyond thercel, and a braking lever, upon which said auxiliary lever is mounted,adapted to bear constantly upon the reel of material, independently of'the take-up action of the auxiliary lever.

5. A combined constant braking and takeup device for material ted fromreels, com prising an auxiliary brake lever yieldingly bearing againstvthe material and adapted to take up slack therein at a point beyond 15the reel, and a braking lever, upon which said auxiliary lever ismounted, adapted to bear constantly upon-the reel of material,independently of the take-up action of the auxiliary lever; saidauxiliary lever being 20 FRANCES GOSELIN DU BRUL,

Eeeutrz'a of the estate of Albert Du Brul,

deceased.

Copies of this patent may be obtained for ve cents each, by addressingthe "Commissioner of Patents, Washington, D. C.

